Virginia Barber Practice Exam

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How often should a patch test be done before coloring hair?

  1. 48 hours prior

  2. 24 hours prior

  3. 1 hour prior

  4. It is not necessary

The correct answer is: 48 hours prior

A patch test should be performed 48 hours prior to coloring hair to ensure that the client does not have an allergic reaction to the hair dye. This timeline allows enough time for any potential allergic reactions to manifest. If a client has a sensitivity to the product, symptoms such as redness, itching, or swelling could develop within this 48-hour period. By conducting the test two days in advance, the stylist can confirm that the client is safe to proceed with the coloring process without risking serious allergic reactions during the actual treatment.

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